It looks like things are going to get a little tense between Ariana Madix and Lala Kent in Monday night's new episode of Vanderpump Rules. As you can see in the preview clip above, Lala finds out that she was one of the few SURvers not invited to Ariana's 30th birthday party, which understandably makes the hostess feel left out.

However, Ariana did show some remorse for her actions. “I remember a lot of Mondays in high school finding out about this super cool party that happened last Saturday, and that is a sh** feeling," Ariana says during the episode. "I’m not trying to make anybody else feel like that.”

That's as far as the conflict between Ariana and Lala goes in the clip, above. However, some news outlets have speculated that things get a little more heated between the two, and Ariana is not having it. The SUR bartender took to Twitter to shoot down reports that she is a "mean girl" for not inviting Lala and every other Vanderpump Rules cast member to her 30th birthday party. "Y'all are really reaching now," Ariana tweeted in regards to a recent RadarOnline article.

LOL at @RadarOnlineCom attempting to call me a mean girl for not inviting every VPR cast member to my bday. Y'all are really reaching now.

She also slammed an Inquisitr article that insinuated she is on the outs with Lala and her longtime boyfriend Tom Sandoval, who she was miffed at for going on Peter Madrigal's boys' trip to Las Vegas during last week's episode of the show. "I've seen the same footage and interestingly enough, I still never saw a fight with Lala," Ariana said in one tweet. "Point is, I like Lala. I didn't know her from a tree in the forest back in June," she said in another.

We'll all have to wait and see if Ariana's relationships actually do take a hit in Monday night's episode of Vanderpump Rules. For now, get a refresher on how her Vegas drama with Tom began in the clip, below.